Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
thanh tung » thanh cong
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
cong tan » cong tac, cong san, cong thanh
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu tinh - ((thanh tung) or (hanh trinh)) va nhung cong tan ((toan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - ((thanh tung) OR (hanh trinh)) va nhung cong tan ((toan cau) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - ((thanh tung) or (hanh trinh)) va nhung cong tan ((toan cau) or (toan tap))*.